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I'm playing leapfrog with the vote thing because in one paragraph you state specifically how a caller might know if a variable is set, and in the very next state they must always be initialized because you can't know if they're unset. This is not the case - you demonstrate fully portable means of knowing whether they are or not, though maybe you don't know it. POSIX parameter expansion enables a caller to use a concept not widely available in other languages - self-testing variables.

mikeserv
– mikeserv

2014-06-24 03:01:08 +00:00
Commented Jun 24, 2014 at 3:01

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